Garmin GT51M-TH is a powerful through-hull transducer, developed for sailors and fishermen who require maximum precision in deep water and harsh conditions. The transducer combines traditional CHIRP sonar with CHIRP ClearVü™ and SideVü™, providing you with an extremely detailed and reliable view of fish, bottom structures, and objects around and under the boat.
The GT51M-TH is optimized for installation in boats with hull deadrise of less than 25° and comes with a stainless steel stem, fairing block, and isolation bushings, which ensure proper water flow and stable sonar signals – even at high speeds and in rough seas.
The ClearVü™ and SideVü™ elements deliver up to 500 W per element (1,500 W total) at 260 and 455 kHz, providing crisp, structural images in both vertical and side scanning. The traditional mid-band CHIRP sonar (80–160 kHz) with 600 W ensures excellent depth performance and target separation at great depths. The built-in fast-response temperature sensor simultaneously provides precise temperature data directly from the water.
Key features
Traditional mid-band CHIRP sonar for deep water
CHIRP ClearVü™ and SideVü™ for detailed structure and fish scanning
High total transmit power – up to 1,500 W ClearVü/SideVü
Stainless steel stem with fairing block for stable installation
Built-in fast-response temperature sensor
Suitable for demanding conditions and professional use
